Description
Technical Parameters
Technical Feature
| Feature Dimension | Specification |
|---|---|
| Structural Topology | Hex head + fully threaded shank (M24×75 standard) |
| Material Grades | 45# carbon steel / 60Si2MnA spring steel / 316 stainless steel (corrosion-resistant) |
| Surface Treatment | Dacromet coating (≥12μm) or hot-dip galvanizing (≥80μm) |
| Tensile Strength | ≥590 MPa (45# steel) |
| Installation Torque | 400-500 N·m (calibrated wrench required) |
| Pull-out Resistance | 15-20 kN (4-5× higher than dog spikes) |
Global Standards Comparison
| Standard | Torque Spec | Testing Requirements |
|---|---|---|
| TB/T 3475 (China) | 450±50 N·m | Ultrasonic flaw detection |
| EN 13481 (EU) | 500±50 N·m | Magnetic particle inspection |
| AREMA Ch.30 (US) | 550±50 N·m | Proof load testing |
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